Created Recovering Drawings (markdown)

Recovering-Drawings.md

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+This page is for users that had Tuhi crash **after** a drawing was successfully downloaded. The usual cause for the crash is that the data parsing code does not understand some component (this code is largely reverse-engineered after all).
+
+Where Tuhi crashes before or during downloading a drawing, the drawing will remain on the device and the steps below are not necessary.
+
+A requirement for the below to work is that the parsing bug in Tuhi is fixed, otherwise it will merely crash again.
+
+Tuhi provides a converter tool that convers the raw data received from the device to an SVG drawing. It must be run from the git repository:
+
+```
+$ git clone https://github.com/tuhiproject/tuhi
+$ cd tuhi
+$ ./tools/raw-log-converter --all --tablet-model=spark  # use your tablet model here
+```
+Using `--all` is the sledgehammer approach. It will go through `$XDG_DATA_HOME/tuhi` and search for **any** log file and convert that file to an SVG. All SVGs are placed in the current directory and their name contains a timestamp to make it easier to identify the drawing.
+
+Where the converter is unable to convert the drawing, use `--verbose` to identify the issue better and attach the output to a [bug report](Reporting-Bugs).
+
+Use `raw-log-converter --help` to see more options available.